Let's keep this one short and to the point. The job of the host -no matter your platform- is to be both a representative of the viewer, and the engineer that keeps the segment on track. It's not about you- its about what you are presenting to the audience. That goes for both you- and what you wear. Let me explain.
More and more I see a new breed of hosts on sites like YT, IGTV and Twitch talking about themselves and yet calling themselves a host. If you want to talk about yourself, fine. Be a pundit. Just have to stand in a bikini and call yourself an Influencer? Not my cup of tea, but millions of viewers can't be wrong. Please, simply call yourself a model- not a host.
As for clothes. please don't wear white or pinstripes and thing the rules of production do not apply to you. They do.